KYB 3440073 Shock Absorber - Rear

KYB Excel-G Rear Shock Absorber

The KYB Excel-G rear shock absorber is an OE-style replacement built to restore original ride control, stability, stopping response, and handling. This KYB Excel-G, part number 3440073, is calibrated for the vehicle’s original damping characteristics rather than changing the suspension feel.

Compatible with rear suspension applications on the Chevrolet Malibu and Buick Regal Sportback, this KYB Excel-G shock absorber is a direct-fit choice for drivers and technicians looking for a factory-style replacement. Part number 3440073 is also cross-referenced with Monroe Shocks & Struts 5547 for the same application.

Key Features

• KYB recommended OEM replacement shock absorber
• Nitrogen gas-charged, twin-tube design
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• Designed to help preserve the performance of electronic safety systems by restoring suspension behavior as engineered
• Rear mount configuration: lower E2 (14.2 x 60), upper S1

Product Details

KYB Excel-G is built on KYB OE production lines using OE-quality components and is classified as an Original Equipment for the Aftermarket replacement. For Chevrolet Malibu rear shock absorber service, this part number 3440073 helps return the suspension to its intended control characteristics. It is also listed for 2018 Buick Regal Sportback rear applications with FWD and notes through 4/30/2018. The design focuses on restoring original damping performance, which is important for consistent tire contact, lane-change response, and body motion control.

What It Helps Address

• Excessive bouncing or oscillation after bumps
• Loose rear-end feel during braking or cornering
• Reduced steering response and body control
• Uneven tire contact caused by worn damping
• Suspension noise or fluid leakage from a worn shock absorber

Installation Notes

Fits 2021-2025 Chevrolet Malibu, rear. Fits 2016-2020 Chevrolet Malibu, rear; replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Fits 2018 Buick Regal Sportback, rear; FWD; to 4/30/2018. Verify mount style, compressed length, extended length, and stroke before installation. Professional installation is recommended, and the suspension should be inspected for worn bushings, mounts, and related components during service.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is produced on the same KYB OE assembly lines using OE-quality components. Part number 3440073 is engineered to restore original designed performance for rear suspension service on the Chevrolet Malibu and Buick Regal Sportback.